CN113931874A - Impeller and processing method thereof and high-temperature centrifugal fan applying impeller - Google Patents
Impeller and processing method thereof and high-temperature centrifugal fan applying impeller Download PDFInfo
- Publication number
- CN113931874A CN113931874A CN202111186905.9A CN202111186905A CN113931874A CN 113931874 A CN113931874 A CN 113931874A CN 202111186905 A CN202111186905 A CN 202111186905A CN 113931874 A CN113931874 A CN 113931874A
- Authority
- CN
- China
- Prior art keywords
- blade
- blades
- panel
- hub
- impeller
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/26—Rotors specially for elastic fluids
- F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
- F04D29/281—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/20—Bonding
- B23K26/21—Bonding by welding
- B23K26/24—Seam welding
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/02—Selection of particular materials
- F04D29/023—Selection of particular materials especially adapted for elastic fluid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/26—Rotors specially for elastic fluids
- F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
- F04D29/30—Vanes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/02—Iron or ferrous alloys
- B23K2103/04—Steel or steel alloys
- B23K2103/05—Stainless steel
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Plasma & Fusion (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses an impeller, a processing method thereof and a high-temperature centrifugal fan applying the same, wherein the impeller comprises: a bottom plate, a panel and a plurality of blades; the bottom plate is provided with a hub; one side of the panel is provided with an inner conical surface, and the small end of the inner conical surface is an air inlet; the blades are arranged in a circumferential array and extend along the radial direction, the lower ends of the blades are fixedly connected with the bottom plate, the blade roots are fixedly connected with the hub, the upper ends of the blades are arranged to be first bevel edges, the first bevel edges are fixedly connected with the inner conical surface of the panel, and radial intervals exist between the adjacent blades to form an air passage; the blade root and the air intake intercommunication of blade, the thickness of blade is progressively dwindled along the blade root to the direction of blade edge. The air passage with a special shape is formed by the bottom plate, the panel and the blades, so that the air passage has high temperature resistance and stress resistance, can adapt to the pyrolysis reaction process of 1000 ℃ and above, is specially designed for the blades, has the advantage of bearing certain centrifugal load and pressure load, and prolongs the service life of the blades.
Description
Technical Field
The invention relates to the technical field of centrifugal fans, in particular to an impeller, a processing method thereof and a high-temperature centrifugal fan applying the impeller.
Background
One of the existing garbage disposal methods is to perform pyrolysis treatment on garbage through a pyrolysis device, and a high-temperature centrifugal fan for the pyrolysis treatment needs to have certain mechanical strength. Particularly, the impeller of the high-temperature centrifugal fan needs to be resistant to high temperature and stress, can bear certain centrifugal load and pressure load, has high machining precision requirement, and otherwise, the blade of the impeller is easy to deform in the using process to cause air passage blockage.
Furthermore, the impeller of the high-temperature centrifugal fan in the pyrolysis device is generally large in size, and is difficult to process due to the high-temperature resistance.
Disclosure of Invention
The invention aims to at least solve one of the technical problems in the prior art, and provides an impeller, a processing method thereof and a high-temperature centrifugal fan using the impeller, which have the advantages of high temperature resistance, stress resistance, capability of bearing certain centrifugal load and pressure load and convenience in processing.
According to an embodiment of the first aspect of the present invention, there is provided an impeller comprising: a bottom plate, a panel and a plurality of blades;
wherein the bottom plate is provided with a hub for connecting a transmission shaft;
one side of the panel is provided with an inner conical surface, and the small end of the inner conical surface is provided with an air inlet;
the blades are circumferentially arranged in an array by taking the center of the air inlet as a base point, the blades extend along the radial direction of an inner conical surface, the lower ends of the blades are fixedly connected with the bottom plate, blade roots of the blades are fixedly connected with the hub, the upper ends of the blades are provided with first inclined edges matched with the inner conical surface of the panel, the first inclined edges are fixedly connected with the inner conical surface of the panel, and a preset radial distance exists between every two adjacent blades to form an air passage;
the blade root of the blade is communicated with the air inlet, and the thickness of the blade is gradually reduced along the direction from the blade root to the blade edge.
Has the advantages that: the impeller forms an air passage with a special shape through the bottom plate, the panel and each blade, has the performances of high temperature resistance and stress resistance, ensures that the impeller can adapt to the pyrolysis reaction process of 1000 ℃ and above, makes a special structural design for the blades, has the advantage of bearing certain centrifugal load and pressure load, and prolongs the service life of the blades.
According to the impeller of the embodiment of the first aspect of the present invention, the material of the bottom plate, the hub, the face plate and the blades is 253MA heat-resistant austenitic stainless steel.
According to the impeller of the embodiment of the first aspect of the present invention, the thickness of the blade is gradually decreased from 2.5mm to 1.0mm in the direction from the blade root to the blade edge.
According to the impeller of the embodiment of the first aspect of the present invention, the panel is shaped like an umbrella, and the air inlet is disposed at a middle position of the panel.
According to the impeller of the embodiment of the first aspect of the invention, the first bevel edge and the inner conical surface of the panel are connected through segmented laser welding.
According to the impeller in the embodiment of the first aspect of the present invention, the outer periphery of the hub is provided with a conical surface, the blade root of each blade is provided with a second oblique edge matched with the conical surface of the hub, the second oblique edge is fixedly connected with the hub, and the blade root of each adjacent blade forms an air inlet of the air passage.
According to a second aspect of the present invention, there is provided a high temperature centrifugal fan comprising: such as the impeller of the embodiment of the first aspect of the invention.
According to an embodiment of the third aspect of the present invention, there is provided a method for processing an impeller, including the steps of:
preparing a bottom plate of heat-resistant austenitic stainless steel, wherein a mounting hole is formed in the middle of the bottom plate;
the hub made of heat-resistant austenitic stainless steel is arranged in the mounting hole in a penetrating mode, and the hub is connected with the bottom plate in a welding mode, wherein a conical surface is arranged at one end, penetrating through the mounting hole, of the hub;
the heat-resistant austenitic stainless steel blades are vertically placed on the bottom plate in a circumferential array with the hub as a center, the blade roots of the blades are abutted against the conical surface of the hub, the bottom of each blade is welded with the bottom plate respectively, and then the blade roots of the blades and the conical surface of the hub are welded respectively in a laser welding mode;
placing an umbrella-shaped heat-resistant austenitic stainless steel panel at the top end of each blade, ensuring that the center of an air inlet positioned in the middle of the panel and the center of a hub are on the same vertical line, then respectively welding the top end of each blade and the panel in a laser welding mode, wherein laser acts on the top surface of the panel during welding and respectively moves along the extending direction of each blade until the joints of the panel and each blade are fused into a welding line.
Has the advantages that: the processing method of the impeller solves the problem that the connection between a large panel which is provided with a curved surface and made of heat-resistant austenitic stainless steel and each blade is difficult in a laser welding mode, ensures the connection firmness in the laser welding mode, reduces the probability of air passage blockage, has low damage to the blade due to low thermal damage in the welding process, improves the mechanical strength and prolongs the service life of the blade.
According to the impeller processing method of the third aspect of the invention, the top end of each blade and the panel are respectively welded by adopting a sectional laser welding mode, and a welding seam is controlled to be less than 0.2mm during welding.
According to a fourth aspect of the present invention, there is provided a high temperature centrifugal fan comprising: the impeller manufactured by the impeller machining method according to the embodiment of the third aspect of the invention.
Drawings
In order to more clearly illustrate the technical solution in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below. It is clear that the described figures are only some embodiments of the invention, not all embodiments, and that a person skilled in the art can also derive other designs and figures from them without inventive effort.
FIG. 1 is a front view of an embodiment of the present invention;
FIG. 2 is a cross-sectional view of FIG. 1;
fig. 3 is a top view of an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to the present preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout.
In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and larger, smaller, larger, etc. are understood as excluding the number, and larger, smaller, inner, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.
Referring to fig. 1 to 3, an impeller includes: a bottom plate 1, a panel 2 and a plurality of blades 3; wherein, the bottom plate 1 is provided with a hub 4 for connecting a transmission shaft; wherein, one side of the panel 2 is provided with an inner conical surface, and the small end of the inner conical surface is provided with an air inlet 5; the blades 3 are circumferentially arranged in an array by taking the center of the air inlet 5 as a base point, the blades 3 extend along the radial direction of the inner conical surface, the lower ends of the blades 3 are fixedly connected with the bottom plate 1, the blade roots of the blades 3 are fixedly connected with the hub 4, the upper ends of the blades 3 are provided with first inclined edges matched with the inner conical surface of the panel 2, the first inclined edges are fixedly connected with the inner conical surface of the panel 2, and a preset radial distance exists between every two adjacent blades 3 so as to form an air passage; wherein, the blade root of the blade 3 is communicated with the air inlet 5, and the thickness of the blade 3 gradually decreases from the blade root to the blade edge. The impeller is provided with an air passage in a special shape formed by the bottom plate 1, the panel 2 and the blades 3, has high temperature resistance and stress resistance, can adapt to the pyrolysis reaction process of 1000 ℃ and above, is specially designed for the blades 3, has the advantage of bearing certain centrifugal load and pressure load, and prolongs the service life of the blades 3.
In some embodiments, the bottom plate 1 is circular, the hub 4 is disposed at the center of the bottom plate 1, one end of the hub 4 is used for being connected with each blade 3, the other end of the hub 4 is used for being connected with a transmission shaft of the driving mechanism, an outward protruding positioning boss is disposed on the hub 4, a mounting hole is disposed on the bottom plate 1, the hub 4 is arranged in the mounting hole in a penetrating manner, the positioning boss abuts against one side surface of the mounting hole, the hub is welded with the bottom plate 1 through the positioning boss, a welding seam is left on the periphery of the positioning boss, and the hub 4 is fixedly connected with the bottom plate 1. Preferably, the welding mode adopts laser welding effect better.
In some embodiments, the panel 2 is a swivel structure, and the central line of the inner conical surface coincides with the central line of the panel 2, the inner conical surface includes a small end and a large end, the aperture of the small end is smaller than that of the large end, and the large end of the inner conical surface is used for forming an air channel with the bottom plate 1 and each blade 3.
In some embodiments, each blade 3 is a thin and long plate-shaped structure, each blade 3 is vertically arranged between the bottom plate 1 and the panel 2, and the number of each blade 3 is eight, and the blades are uniformly arranged on the bottom plate 1.
Preferably, the material of the base plate 1, hub 4, face plate 2 and blades 3 is 253MA heat resistant austenitic stainless steel. In a high-temperature cracking device, the working environment temperature of the impeller can reach 1000 ℃ or above at most, 253MA heat-resistant austenitic stainless steel can have the characteristic of resisting high temperature of 1350 ℃ or above, therefore, the bottom plate 1, the hub 4, the panel 2, the blades 3 and the like can meet the requirements by selecting the 253MA heat-resistant austenitic stainless steel to be manufactured, and the like, and simultaneously, under the influence of centrifugal load, pressure load, variable load and temperature load, the yield strength of the material of the blades 3 is greater than the equivalent stress value at the blade roots of the blades 3, otherwise, the local parts of the blades 3 can generate plastic deformation, and the yield strength of the 253MA heat-resistant austenitic stainless steel can still meet the requirements under the high-temperature condition.
Preferably, the thickness of the blade 3 decreases gradually from 2.5mm to 1.0mm in the direction from the blade root to the blade edge. The special design of the blades 3 can ensure that the load pressure distribution of the blades 3 is more uniform, and meanwhile, the rotating tangential force is improved; the 3 dangerous points of blade are blade root department, and blade root department is thicker can bear the equivalent stress that centrifugal load and pressure load synergism produced better, has increased simultaneously with wheel hub 4 welded area of contact, has improved the welding firmness, and thickness progressively diminishes to the blade edge department, can effectual reduction thickness increase the total pressure ratio decline that leads to, maintenance reaction temperature that can be better.
Preferably, the panel 2 is shaped like an umbrella, and the air inlet 5 is arranged at the middle position of the panel 2. Including but not only be limited to the mode through the punching press to panel 2 shaping, the interior conical surface part through panel 2 constitutes the air flue of special shape, can reduce the obstructed condition of air flue and take place, and air output and air-out temperature are more stable, and the wind of seeing off accords with pyrolysis reaction's requirement. By designing the panel 2 to be umbrella-shaped, the flow thereof when being matched with the diffuser during air outlet becomes uniform, thereby widening the stable working region as a whole.
Preferably, the first oblique edge is connected with the inner conical surface of the panel 2 by means of segmented laser welding. When concrete joint adds man-hour, because panel 2 is whole huge, and the material has chooseed 253MA of high temperature resistant stress, consequently ordinary connected mode hardly guarantees each blade 3 evenly with panel 2's interior conical surface fixed connection, and laser welding can not only shorten man-hour, has reduced between each blade 3 with panel 2's connection error, the intensity of connecting is enough moreover, and is low to blade 3 damage, realizes that the deformation among the welding process is controllable, does not have the effect of deformation basically even.
Preferably, the periphery of the hub 4 is set to be a conical surface, the blade root of each blade 3 is set to be a second bevel edge matched with the conical surface of the hub 4, the second bevel edge is fixedly connected with the hub 4, and the blade root of each adjacent blade 3 forms an air inlet of an air passage. Due to the special shape design of the blade 3, the blade root is wide relative to the blade edge, the contact area of welding is increased, and the welding firmness is improved.
A high temperature centrifugal fan comprising: the impeller in the embodiment of the invention can have stable and high-temperature air output.
A method for processing an impeller comprises the following steps:
preparing a bottom plate 1 of heat-resistant austenitic stainless steel, wherein the middle part of the bottom plate 1 is provided with a mounting hole;
the method comprises the following steps of (1) penetrating a heat-resistant austenitic stainless steel hub 4 into a mounting hole, and welding the hub 4 and a bottom plate 1, wherein a conical surface is arranged at one end of the hub 4 penetrating through the mounting hole;
the heat-resistant austenitic stainless steel blades 3 are vertically placed on the base plate 1 in a circumferential array with the hub 4 as a center, the blade roots of the blades 3 are abutted against the conical surface of the hub 4, the bottom of each blade 3 is firstly welded with the base plate 1 respectively, and then the blade roots of the blades 3 are welded with the conical surface of the hub 4 respectively in a laser welding mode;
the method comprises the steps of placing an umbrella-shaped heat-resistant austenitic stainless steel panel 2 at the top end of each blade 3, ensuring that the center of an air inlet 5 in the middle of the panel 2 and the center of a hub 4 are on the same vertical line, welding the top end of each blade 3 and the panel 2 respectively in a laser welding mode, and enabling laser to act on the top surface of the panel 2 during welding and move along the extending direction of each blade 3 respectively until the connecting parts of the panel 2 and each blade 3 are fused into a welding line.
The processing method of the impeller solves the problem that the connection between the large panel 2 which is provided with a curved surface and made of heat-resistant austenitic stainless steel and each blade 3 is difficult in a laser welding mode, ensures the connection firmness in the laser welding mode, reduces the probability of air passage blockage, has low damage to the blade 3 due to low heat damage in the welding process, improves the mechanical strength and prolongs the service life of the blade 3.
In some embodiments, the connection between the bottom plate 1 and each blade 3 can be welded by a welding machine, and the welding mode is not further limited, preferably, the welding mode is a laser welding mode; the connection of each blade 3 to the panel 2 and hub 4 may be welded by a laser machine.
Preferably, the top end of each blade 3 and the panel 2 are respectively welded by adopting a sectional laser welding mode, and the welding seam is controlled to be less than 0.2mm during welding. The welding is stopped at the vent edge of the panel 2 by feeding the blade edge as a starting point in the extending direction of the blade 3. The number of times and the timing of the segmentation can be determined according to the curvature of the outer curved surface of the panel 2 in the feeding process, and the welding quality is ensured. In some embodiments, the weld of each blade 3 to the panel 2 is divided into three sections.
A high temperature centrifugal fan comprising: the impeller manufactured by the processing method of the impeller in the embodiment of the invention can have stable and high-temperature air output.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.
Claims (10)
1. An impeller, comprising: a bottom plate, a panel and a plurality of blades;
wherein the bottom plate is provided with a hub for connecting a transmission shaft;
one side of the panel is provided with an inner conical surface, and the small end of the inner conical surface is provided with an air inlet;
the blades are circumferentially arranged in an array by taking the center of the air inlet as a base point, the blades extend along the radial direction of an inner conical surface, the lower ends of the blades are fixedly connected with the bottom plate, blade roots of the blades are fixedly connected with the hub, the upper ends of the blades are provided with first inclined edges matched with the inner conical surface of the panel, the first inclined edges are fixedly connected with the inner conical surface of the panel, and a preset radial distance exists between every two adjacent blades to form an air passage;
the blade root of the blade is communicated with the air inlet, and the thickness of the blade is gradually reduced along the direction from the blade root to the blade edge.
2. The impeller of claim 1, wherein: the bottom plate, the hub, the face plate and the blades are all made of 253MA heat-resistant austenitic stainless steel.
3. The impeller of claim 2, wherein: the thickness of the blade is gradually reduced from 2.5mm to 1.0mm along the direction from the blade root to the blade edge.
4. The impeller of claim 2, wherein: the panel is umbrella-shaped, and the air inlet is formed in the middle of the panel.
5. The impeller of claim 4, wherein: the first bevel edge is connected with the inner conical surface of the panel in a sectional type laser welding mode.
6. The impeller according to any one of claims 1 to 5, wherein: the periphery of the hub is set to be a conical surface, the blade root of each blade is set to be a second bevel edge matched with the conical surface of the hub, the second bevel edge is fixedly connected with the hub, and the adjacent blade root of each blade forms an air inlet of the air passage.
7. A high temperature centrifugal fan, comprising: an impeller according to any one of claims 1 to 6.
8. The impeller machining method is characterized by comprising the following steps of:
preparing a bottom plate of heat-resistant austenitic stainless steel, wherein a mounting hole is formed in the middle of the bottom plate;
the hub made of heat-resistant austenitic stainless steel is arranged in the mounting hole in a penetrating mode, and the hub is connected with the bottom plate in a welding mode, wherein a conical surface is arranged at one end, penetrating through the mounting hole, of the hub;
the heat-resistant austenitic stainless steel blades are vertically placed on the bottom plate in a circumferential array with the hub as a center, the blade roots of the blades are abutted against the conical surface of the hub, the bottom of each blade is welded with the bottom plate respectively, and then the blade roots of the blades and the conical surface of the hub are welded respectively in a laser welding mode;
placing an umbrella-shaped heat-resistant austenitic stainless steel panel at the top end of each blade, ensuring that the center of an air inlet positioned in the middle of the panel and the center of a hub are on the same vertical line, then respectively welding the top end of each blade and the panel in a laser welding mode, wherein laser acts on the top surface of the panel during welding and respectively moves along the extending direction of each blade until the joints of the panel and each blade are fused into a welding line.
9. The method of processing an impeller according to claim 8, wherein: and respectively welding the top end of each blade and the panel by adopting a sectional type laser welding mode, and controlling the welding line to be less than 0.2mm during welding.
10. A high temperature centrifugal fan, comprising: an impeller produced by the method for machining an impeller according to claim 8 or 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111186905.9A CN113931874A (en) | 2021-10-12 | 2021-10-12 | Impeller and processing method thereof and high-temperature centrifugal fan applying impeller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111186905.9A CN113931874A (en) | 2021-10-12 | 2021-10-12 | Impeller and processing method thereof and high-temperature centrifugal fan applying impeller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113931874A true CN113931874A (en) | 2022-01-14 |
Family
ID=79278907
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111186905.9A Pending CN113931874A (en) | 2021-10-12 | 2021-10-12 | Impeller and processing method thereof and high-temperature centrifugal fan applying impeller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113931874A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4958987A (en) * | 1989-07-20 | 1990-09-25 | Precision Cutters, Inc. | Materials handling fan impeller |
| US20050025640A1 (en) * | 2003-07-10 | 2005-02-03 | Shinichi Sekiguchi | Vacuum pump and semiconductor manufacturing apparatus |
| CN102454631A (en) * | 2010-10-25 | 2012-05-16 | 天津长光伟业特种风机有限公司 | Fan impellor for improving strength |
| CN204511963U (en) * | 2015-03-16 | 2015-07-29 | 温岭市大昌冲件厂 | Centrifugal pump impeller |
| CN104879316A (en) * | 2015-05-14 | 2015-09-02 | 江苏大学 | Stainless steel pulse-welded centrifugal pump impeller and improved welding method thereof |
| CN110685938A (en) * | 2019-10-09 | 2020-01-14 | 伦登风机科技(天津)有限公司 | Meridian acceleration centrifugal fan impeller of high-temperature industrial furnace |
-
2021
- 2021-10-12 CN CN202111186905.9A patent/CN113931874A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4958987A (en) * | 1989-07-20 | 1990-09-25 | Precision Cutters, Inc. | Materials handling fan impeller |
| US20050025640A1 (en) * | 2003-07-10 | 2005-02-03 | Shinichi Sekiguchi | Vacuum pump and semiconductor manufacturing apparatus |
| CN102454631A (en) * | 2010-10-25 | 2012-05-16 | 天津长光伟业特种风机有限公司 | Fan impellor for improving strength |
| CN204511963U (en) * | 2015-03-16 | 2015-07-29 | 温岭市大昌冲件厂 | Centrifugal pump impeller |
| CN104879316A (en) * | 2015-05-14 | 2015-09-02 | 江苏大学 | Stainless steel pulse-welded centrifugal pump impeller and improved welding method thereof |
| CN110685938A (en) * | 2019-10-09 | 2020-01-14 | 伦登风机科技(天津)有限公司 | Meridian acceleration centrifugal fan impeller of high-temperature industrial furnace |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP1346156B1 (en) | High efficiency one-piece centrifugal blower | |
| CN107131153B (en) | Axial flow fan | |
| US20230332615A1 (en) | Turbofan and air-conditioning apparatus | |
| CN113931874A (en) | Impeller and processing method thereof and high-temperature centrifugal fan applying impeller | |
| CN101328903A (en) | Forward multiple-wing fan of air conditioner | |
| CN213655240U (en) | Bidirectional multi-wing centrifugal fan impeller | |
| CN100460692C (en) | Fan frame with flow guiding stator blade and fan | |
| EP3734655B1 (en) | High efficiency integrated ax-radial blower and heat exchanger | |
| CN210509668U (en) | Air-cooled circulating fan for heat treatment furnace | |
| CN210565315U (en) | Impeller | |
| CN216199229U (en) | Double-blade structure impeller of range hood | |
| CN211423004U (en) | Centrifugal fan impeller | |
| CN213953981U (en) | Integrated centrifugal fan | |
| CN113250978B (en) | Heat radiation fan | |
| US20200263699A1 (en) | Impeller blade for centrifugal fan and manufacturing method thereof | |
| CN113883088A (en) | Method for manufacturing impeller with double-blade structure of range hood and impeller manufactured by method | |
| CN211343983U (en) | Cooling system for fan at high-speed end of gear box | |
| KR100265648B1 (en) | Method for manufacturing blade impeller and blade impeller manufactured by such method | |
| CN218177495U (en) | Low-noise multi-wing centrifugal fan | |
| CN210003559U (en) | axial-flow fan blade and air conditioner with same | |
| CN209908840U (en) | Wind wheel and baking equipment | |
| CN102454631A (en) | Fan impellor for improving strength | |
| CN110145489B (en) | Fan blade and fan impeller | |
| CN212250576U (en) | Middle-section fan blade, cross-flow fan blade and air conditioner | |
| CN114658491B (en) | Rim-driven Taiji vortex fan blade and application |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |